1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.events;
24  
25  import com.liferay.portal.kernel.events.SessionAction;
26  import com.liferay.portal.kernel.log.Log;
27  import com.liferay.portal.kernel.log.LogFactoryUtil;
28  
29  import java.text.NumberFormat;
30  
31  import javax.servlet.http.HttpSession;
32  
33  /**
34   * <a href="GarbageCollectorAction.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   */
38  public class GarbageCollectorAction extends SessionAction {
39  
40      public void run(HttpSession session) {
41          Runtime runtime = Runtime.getRuntime();
42  
43          NumberFormat nf = NumberFormat.getInstance();
44  
45          if (_log.isDebugEnabled()) {
46              _log.debug(
47                  "Before:\t\t" +
48                      nf.format(runtime.freeMemory()) + "\t" +
49                          nf.format(runtime.totalMemory()) + "\t" +
50                              nf.format(runtime.maxMemory()));
51          }
52  
53          System.gc();
54  
55          if (_log.isDebugEnabled()) {
56              _log.debug(
57                  "After:\t\t" +
58                      nf.format(runtime.freeMemory()) + "\t" +
59                          nf.format(runtime.totalMemory()) + "\t" +
60                              nf.format(runtime.maxMemory()));
61          }
62      }
63  
64      private static Log _log =
65          LogFactoryUtil.getLog(GarbageCollectorAction.class);
66  
67  }